Improvement in baling-presses



iss] s GERGE BRODIE..

lmprovementin Baling Presses. Figi F2312 '119,009, ?atented Sep.19,1871.

JMJ.

Unrra GEORGE BRODIE, OF PLUM BAYOU, ARKANSAS.

IMPROVEMENT IN BALlNG-PRESSES.

Specification forming part of Letters Patent No. 119,009, datedSeptember 19, 1871.

To all whom it may concern:

Be it known that I, GEORGE Bnonm, of Plum Bayou, in the county ofJefferson and State of Arkansas, have invented certain Improvements inBaling-Presses; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanyingdrawing making part of this specification, in which- Figurel is a section taken through a press in a vertical plane on one side of'the follower-rod. Fig. 2 is a section taken vertically and transverselythrough the press. Fig. 3 is a top view of the follower-rod and its nut.

Similar letters of reference indicate corresponding parts in the severalgures.

This invention relates to improvements in the construction of thefollower-rods of screw-presses. In this class of presses it has been thepractice hitherto to employ a singlescrew-rod in the center of thefollower, or to employ two screwrods, or two racks arranged near theends ofthe follower. The objection attending the presses is that therods are liable to bend and break during the pressing operation inconsequence of unequal strain on the extremities of the follower, whichcauses the latter to tilt more or less. If'

I it was practicable to pack the material into the bale-box equally thena central followerrod might Work very well; but it is well known thatthere is always more or less of the material at one end of the press-boxthan at the other. The object of my invention is to so construct asingle follower-rod that will operate with equal force on both ends ofthe follower and prevent the latter from tilting during the pressingoperation; also, to provide for expanding such rod to compensate for thewearing away of its teeth and the thread of the nut which moves it, aswill be hereinafter explained.

rIhe following is a description of my invention: In the accompanyingdrawing, A represents the frame of a baling-press of the upright kind. Bis the press-box; C, a substantial sill or foundation for the press; andD is afollower, which is arranged to move upand down in the press-box.The follower D has secured to it a follower-rod, E, which passes downthrough and engages with a nut, G, to which the lever or sweeps S S areconfined by bolts g. The nut G is located at the lower end of thepress-box B, beneath solid timbers, and it is supported upon thesill-timbers C between suitable guides, which keep it in place but allowit to be turned freely about its axis. The follower-rod is nearly aswide as the length of the follower D, but it is considerably less inthickness than the width of the follower. To the two ed ges of thecentral portions e e of the followerrod toothed racks ay a are bolted,the upper ends of which are rigidly secured to the follower. The racksare seg ments of a screw and their teeth correspond to the groovebetween the thread ofthe nut G. The central portions e c of thefollower-rod are wedge-shaped and are bolted together bythe same bolts,b b, which secure in place the racks a a.. The central portion of thefollower-rod consists of two or more wedge-shaped or taperring piecesfor the purpose of expanding the rod and thereby compensating for thewearing away of the rack-teeth a a. This I effect by passing the bolts bb through oblong holes and secrning the upper ends of the racks a a tothe follower by means of' screws c o which pass through oblong holes.

By loosening the bolts and screws and sliding the pieces e e on oneanother the rod can be expanded, after which the whole can be securedrigidly together again.

It will be seen from the above description that during the pressingoperation separate and distinct parts ofthe flattened screw operate ateach end of the follower at the same time 5 and if there is morematerial beneath one end of the follower than beneath the other endthereof one side of the rod will only be subjected to a greater strainthan the other side, but there can be no side thrust or effort to bendthe rod.

The rod is made partly of wood and partly of metal, so that it is verylight and cheap and at the same time strong and durable.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, 1s-

l. rlhe flattened follower-rod E, obliquely divided, as described, andtoothed racks or screw segments a a., in combination with the nut G,substantially as described.

2. The screw follower-rod E, composed of ad- `justable sections forexpanding it, substantially as described.

Witnesses: GEORGE BRODIE.

J. N. CAMPBELL, EDM. F. BRowN.

